Revelation 9:2

And he opened the bottomless pit, and smoke arose out of the pit like the smoke of a great furnace.  So the sun and the air were darkened because of the smoke of the pit.

·        The devil carries on his designs by extinguishing light and knowledge (MH)

·        These are obviously not “natural” locusts. They avoid plants and attack men like scorpions attack. They are “A visual representation of the hordes of demons loosed upon the earth.” (Walvoord)

Genesis 19:28  Then he looked toward Sodom and Gomorrah, and toward all the land of the plain; and he saw, and behold, the smoke of the land which went up like the smoke of a furnace.

Ezekiel 32:7  When I put out your light, I will cover the heavens, and make its stars dark; I will cover the sun with a cloud, and the moon shall not give her light.